What can you do after learning java?

If you are a Java beginner, you may be confused about where Java is used. Except for classic games such as "Mario" and "Snake", there seems to be no trace of Java in other fields. So what can Java do?

1. Android application

Android is a free and open source operating system based on Linux. Its source code is Java. The mobile phone systems we see on the market, such as MIUI, Alibaba Cloud, Lewa, etc., all modify the source code and then release it. (Recommended learning: java course)

Java for Android not only refers to the system, but also to APP. For more developers, they spend more time developing APP above. Just open any App application, they use Java language, search Android API documentation from Google, and you will find that it is surprisingly similar to Java's JDK documentation.

Since Android just started two years ago, many Android applications today are developed by Java programmers. Although Android uses different JVMs and different packaging methods, the code is still written in Java language.

2. Server program

Java is widely used in the financial services industry. Many multinational investment banks such as: Goldman Sachs (Goldman Sachs Investment), Citigroup (Citigroup) , Barclays (Barclays), and other banks, all use Java to write front-end and back-end electronic trading systems, settlement and confirmation systems, data processing projects, and other projects.

In most cases, Java is used for server-side development, but most of them do not have any front-end. They usually receive data from a server (upper level), process it and send it to another processing system (next level). level processing).

3. Website field

Java can be used to write websites. Now many large websites are written in JSP. The full name of JSP is Java Server Pages. It is a dynamic web page technology, such as the 163 we are familiar with. Some government websites are written using JSP.

So students who study Java can find jobs in website development, and there are more jobs in this area now. For example: website development, of course, JSP Servlet JavaBean, which has always been quite popular.

4. Embedded field

Java has great room for development in the embedded field. On this platform, you only need 130KB to use Java technology (on a smart card or sensor). Originally, Java was designed to work on embedded book devices. In fact, this is just one area. This was just a "write once, play anywhere" project, and now it looks like this.

5. Game Development

Maybe you don’t know that when Nokia was still very popular, more than 90% of the mobile games you played were developed in Java. . Of course, very few people are developing anymore, and they have all moved to Android.

There are also games developed in Java on computers. The most classic ones are: "Minecraft" (MC for short) and one of the most popular and influential online games in the world today, "League of Legends" (referred to as "League of Legends"). lol).

6. Software development

General programming languages ​​can be used to develop software, and Java is no exception, such as Eclipse, MyEclipse and other well-known Java development tools. Regarding the development of software components , you can learn about Java Swing programming or awt related knowledge.

For example: Enterprise-level application development, here is the world of JAVA, ranging from large nationwide networked systems to small and medium-sized enterprise application solutions, Java occupies an extremely important position. There is also the mobile field. The typical application is mobile games (mainly in this area in China). This is the world of J2ME. In fact, the scope of application is very wide.

Java has become the most popular programming software on the market today. In today's fast-developing world of information, Java technology is everywhere, including mobile software, mobile JAVA games, computer software, etc.

7. Big Data

Hadoop and other big data processing technologies use Java or others, such as Apache's Java-based HBase and Accumulo and ElasticSearchas.

But Java does not occupy much space in this field, but as long as Hadoop and ElasticSearchas can grow and develop, Java still has the potential to occupy a part of this market.

8. Scientific Applications

Today, Java is still the best choice for scientific applications, including natural language processing. The main reason is that Java has better security, portability, maintainability, and concurrency than other high-level languages ​​than C or other languages.

Java is the default application development language in the software industry. It is widely used in the financial services industry, investment banking and e-commerce application space. Any outstanding programmer who learns Java has a bright future.

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